Other NXP Products中的主题 Re: VR5510 Temperature calculation

VR5510 Temperature calculation

Girish1984 — Thu, 29 Sep 2022 06:57:48 GMT

Hello,

I have a general question w.r.t temperature calculation from the data sheet of VR5510 Multi-Output PMIC.

Vtemp25 : Temperature Sensor Voltage at 25 deg C : Min 0.67V : Typ: 0.69V : Max : 0.71V

Vtemp_coeff : Temperature Sensor Coefficient : Min -2 : Typ -- : Max -1.9 mV/degC

Kindly let me know on how do I calculate temperature.

Thanks.

Re: VR5510 Temperature calculation

JozefKozon — Tue, 04 Oct 2022 05:27:31 GMT

Hello Girish,

a formula to calculate the temperature in the VR5510 temperature sensor is T(°C) = [(VAMUX – VTEMP25) /VTEMP_COEFF] + 25. It's for the typical value. I have created an excel file with a graph comparing the temperature with the measured voltage. Please find it attached.

With Best Regards,

Jozef

Re: VR5510 Temperature calculation

sbobos — Tue, 27 Jun 2023 09:28:21 GMT

Hello @JozefKozon,

I have one additional question about this topic. How we can get the VAMUX value in voltages? When we read the Amux channel for temperature we get value in digital representation, but in a formula, we are using voltage values.